👀 Views: 76 💬 Answers: 1 📅 Created: 2025-09-13

azure event-grid azure-functions C#

I've searched everywhere and can't find a clear answer... This might be a silly question, but I'm deploying to production and I'm sure I'm missing something obvious here, but Currently developing an integration that requires my Azure Function to respond to Event Grid events, but I keep running into 404 errors when the events are dispatched. I’ve set up my function with the Event Grid trigger, but I'm not sure if my bindings are configured correctly. Here’s a snippet of the `function.json`: ```json { "bindings": [ { "type": "eventGridTrigger", "name": "event", "direction": "in" } ] } ``` In my `Startup.cs`, I've registered the necessary services with: ```csharp public class Startup : FunctionsStartup { public override void Configure(IFunctionsHostBuilder builder) { builder.Services.AddHttpClient(); } } ``` Testing the function with a simple HTTP POST to its endpoint returns a 404. I’ve verified that the function URL is correct, but it seems that the events never reach it. Checking the logs shows that the Event Grid is attempting to send the event, but it’s failing without any detailed messages. I tried adding diagnostic logging to track incoming requests: ```csharp [FunctionName("EventGridFunction")] public static async Task Run([EventGridTrigger] EventGridEvent eventGridEvent, ILogger log) { log.LogInformation($"Event received: {eventGridEvent.EventType}"); } ``` Unfortunately, this logging doesn’t appear in Application Insights, indicating the function isn’t triggering at all. I've also ensured that the Event Grid subscription is correctly pointing to my function's URL, including the necessary access keys. Does anyone have insights on potential misconfigurations or steps I might be missing with Azure Function triggers in this context? Any suggestions would be greatly appreciated. Am I missing something obvious? This is for a mobile app running on CentOS. Thanks, I really appreciate it! Is this even possible?